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Low-noise differential transimpedance amplifier structure based on capacitor cross-coupled gm-boosting scheme

Jalali, M ; Sharif University of Technology | 2008

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  1. Type of Document: Article
  2. DOI: 10.1016/j.mejo.2008.08.005
  3. Publisher: 2008
  4. Abstract:
  5. This paper presents a capacitor cross-coupled gm-boosting scheme for differential implementation of common-gate transimpedance amplifier (CG-TIA). A differential transimpedance amplifiers (DTIA) is designed by this scheme using two modified floating-biased CG stage with improved low corner frequency. Despite conventional methods for single-ended to differential conversion that increase the power and the noise for the same gain, the new DTIA gives a higher gain and hence reduces the input-referred noise power. Design of the DTIA circuit using 0.13 μm CMOS technology illustrates near 1.7 dB improvement in the circuit sensitivity and 5.2 dB enhancement in transimpedance gain compared to its single-ended counterpart. Operation at very low frequencies and stable dc coupling to photodiode are other features of the proposed DTIA. © 2008 Elsevier Ltd. All rights reserved
  6. Keywords:
  7. Amplifiers (electronic) ; Capacitance ; Capacitors ; CMOS integrated circuits ; Dielectric devices ; Electric equipment ; Capacitive cross-coupling ; Common-gate configuration ; Floating-biasing ; gm-Boosting technique ; Transimpedance amplifier ; Differential amplifiers
  8. Source: Microelectronics Journal ; Volume 39, Issue 12 , 2008 , Pages 1843-1851 ; 00262692 (ISSN)
  9. URL: https://www.sciencedirect.com/science/article/abs/pii/S0026269208004576